I've never heard of that organization, but check this out from your link:
Although only one out of every 1,000 young men in the United States, age 13 to 21, will join DeMolay, it is interesting to note that many of this nation's leaders in business, religion, and politics belonged to DeMolay in their teens. In fact, one out of every twelve State Governors is a Senior DeMolay and one out of every ten United States Senators is a Senior DeMolay.